diff --git a/modules/periodic.nix b/modules/periodic.nix
index 53dd712..cbea93b 100644
--- a/modules/periodic.nix
+++ b/modules/periodic.nix
@@ -38,12 +38,12 @@ in {
     script = ''
       ${pkgs.bash}/bin/bash -c "/home/coolneng/system/scripts/SATA-hat.sh on"
     '';
-    preStop = ''
-      ${pkgs.bash}/bin/bash -c "/home/coolneng/system/scripts/SATA-hat.sh off"
-    '';
     serviceConfig = {
       Type = "oneshot";
       RemainAfterExit = "yes";
+      ExecStop = ''
+        ${pkgs.bash}/bin/bash -c "/home/coolneng/system/scripts/SATA-hat.sh off"
+      '';
     };
     before = [ "zfs-import.target" "zfs-import-vault.service" "umount.target" ];
     requires = [ "systemd-udev-settle.service" ];